msm: sde: Add support for 1.5x downscale in rotator

msmcobalt v2 supports 1.5x downscaling in the rotator.

CRs-Fixed: 1055035
Change-Id: Icd71fd6d53783a7972305d1256acb209698e575d
Signed-off-by: Benjamin Chan <bkchan@codeaurora.org>
4 files changed